Improvement in harvester-rakes



, I s. 0. COBB. Harvester-Rake.

No. 209,327. Patented Oct. 29,1878.

mflnesses I jnyeni or la/mvelall'olllf B 1 iii/omega NPEIERS, FDIOTOLlTHOGRAFHER WASHINGTON DV 0.

UNITED STATES F PATENT OFFICE.

SAMUEL O. COBB, OF JANESVILLE, WISCONSIN, ASSIGNOR TO HARRISMANUFACTURING COMPANY, OF SAME PLACE.

IM PROVEMENT lN HARVESTER-RAKES.

Specification fin'ming part of Letters Patent N0. 209,327, dated October29, 1878 application filed February l l, 1878.

To all whom it may concern:

Be it known that I, .SAMUELI 0.001313, of J anesville, in the county ofRock and State of Wisconsin, have invented a new and useful Improvementin Harvester-Rakes, which is fully described in the followingspecification, reference being had to the accompanying drawing, inwhichi Figure 1 represents a'front elevation of a harvester revolvingreel and rake involving myimprovements, some portions being broken away;Fig. 2, a plan view of the driving and regulating mechanism, a portionof the cam being broken away; Fig. 3, aplan View of the bottom of therake-head Fig. 4, a detail eleration of the trip-gear and its supports;and

. Fig. 5, detail views of the automatic trip-lever.

, My invention relates to that class of har' Vester-rakes generallyknown as combined revolving rake and reel, the general features of whichare now well known.

The invention consists in locating the gearwheel which drives theautomatic trip upon the rake-head, and casting it in one piecetherewith. it

It also consists in special devices for operating the automaticswitch-trip and in various combinations of devices, all of which will behereinafter more fully set forth.

In the drawings, A represents the standard or post upon which therevolvln g rake and reel is supported, and which is itself mountedeither upon the grain-platform orifinger-beam.

in any well-known way. The cam-guide B is mounted upon this standard,and is substantially the same as those heretofore used, and

is provided with switches a b, so as to give the cam a double track,in away well known. A post or shaft, 0, is arranged upon the upper side ofthe can]. This post is cast in one piece with the cam, and is arrangedin an upright position and adapted to form the journal of the revolvinghead, to which the rakearms are hinged. A short shaft, 0, extendinghorizontally from the foot of the shaft 0, is also cast in one piecewith the latter and the cam, and adapted to receive the beveled pinion,by means of which motion is communicated fromthe main gearing to therake-head.

The rake-head D ismounted upon the shaft 0, and the rake-arms E hingedthereto, the latter being provided with elbows e on the under side, attheir inner ends, which carry friction-rollers, and are arranged to runupon the cam, for the purpose of changing the position of the rakes asrequired.

On the under side of the rake-head D the usual bevel-gear d is arranged,to which motion is communicated by the bevel-pinion. A spur-gear wheel,d, somewhat smaller than the bevel gear, is arranged just below thelatter, as shown in Figs. 1 and 3 of the drawings.

The rake-head, bevel-gear, and spur-gear are all cast together, so as toconstitute but a single piece, which feature makes the construction ofthese parts simple, compact, cheap, and durable.

In this rake I use an automatic trip for changing the front switch, a,automatically, thereby changing the path of one of the rake- 1 arms atthe proper time to cause it to sweep over the platform for the purposeof discharging the gavel.

A bent spring, F, is arranged at the rear of the switch, below the cam,so as to act upon an arm, f, projecting from the rear portion of theswitch-pivot in such a manner as to turn the switch outward or open, inwhich position it will always hold it, unless its force is counteractedby some other device.

An arm or rod, G, is pivoted at one end to an arm, 9, at the lower endof the front'switchpivot, from which it projects forward, as shown inFig. 2 of the drawings. The rod G is carried forward and inward towardthe standard, and at its forward end is inserted in a loop or keeper, h,which is at one side of a bearing secured to the cam, as shown in Fig.4. of the drawings. The forward end of this arm G' is bent down andarranged to form a hook or catch, 9 as shown in Fig. 5 of the drawings,which, when the rod is projected through the loop h, catches over thelower end of the latter, thereby holding it from slipping back.

A spring, 9 is fastened at the rear end to the upper side of thetripping-arm G, the forward end of which extends within the loop h, andoperates to depress the forwerd end of the trip-arm G and cause thecatch to engage with I the keeper. The trip-arm is attached to the armon the switch-pivot by a universal joint, so as to permit both verticaland horizontal movement of the arm.

Now, it is evident, from the above description of the construction andarrangement of these parts, that the latch-piece Gr operates inopposition to the spring F, so that when it is projected forward theswitch will be closed, and will be held in this latter position by theengagement of the latch with its keeper h, in opposition to the force ofthe spring F, which tends to throw the switch open. The keeper h is on abox or bearing, H, which is constructed to receive and support anupright shaft, I, and is bolted to a lug, b, projecting from the underside of the cam B, the lug being slotted to permit the adjustment of thebearing. In this bearingis journaled the tripshaft I, which carries uponits upper end a loose pinion, i, the parts being arranged so that thelatter engages with the spur-wheel d on the rake-head. A sliding clutch,K, is also attached to the shaft I by the usual spline and groove, andarranged just below the pinion 1', so that when moved up it will engagewith clutch-teeth on the lower face of the latter. A clutch-lever, 7c,is pivoted to an arm, h, on the upper end of the box H, the forked endof which embraces the clutch, so as to slip the latter up and down onits shaft when vibrated.

At the lower end of the shaft 1 is a trip, L, which is rigidly fastenedto the shaft, and has a cam-projection, Z, upon its upper face and outerend. This trip is arranged to revolve just underneath the latch G, sothat if the latter is caught in the keeper the cam-projection on thetrip will lift the forward end of the latch sufficiently to disengagethe catch, when, of course, the switch-spring will operate immediatelyto throw the switch a open. This switch is constructed with the usualextension at in rear of the pivot, bent inward, so that when the switchis open it will stand in the path of the first elbow passing along theinside track of the cam, and by it will be forced out to close theswitch again, the spring-latch also engaging again with its keeper tofasten the switch.

Now, the gear-wheels d and i are timed so that the latter revolves oncewith each revolution of the former; hence it is evident that, if thepinion '5 remains clutched to its shaft, at each revolution of therake-head the switch will be opened once, so as to change the path ofone of the rakes and cause it to sweep the platform, but will be held ina closed position for all the rest of the rakes.

The clutch-lever 7a is weighted at its outer end, so that it willautomatically operate to engage the clutch with the pinion i and hold itin this position. A cord may be attached to the lever and extendedwithin reach of the driver, so that the clutch may be disengaged at willif it is desired to skip an interval, when one of the rakes in regularorder would sweep the platform. It is evident, also, that thetripgearing may be so timed as to cause more than one of the rakes tosweep the platform during one revolution of the rake-head, or so that itwill require more than one revolution of the latter to open the switchand cause a rake to sweep the platform, this arrangement being a merematter of calculation to adapt the rake to the special interval desired.

I am aware of Letters Patent No. 186,413, granted to Orville Cooley,January 23, 187 7 and N 0. 187,296, granted to Jacob H. Myers, February13, 1877, and I do not claim any device or combination of devicesdescribed and shown in either of said patents.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The gear-wheel d, for driving the automatic trip, arranged upon therake-head D, substantially as described.

2. The rake-head D, bevel-gear d, and tripdriving gear d, arranged asspecified, and cast together to form a single piece, substantially asdescribed.

3. The independent bracket H, provided with bearings for the trip-shaftand with a loop or keeper, h, for the latch, in combination with therake-cam to which it is secured, substantially as described.

4. The upright trip-shaft I, in combination with a sliding clutch, K,arranged thereon, and loose pinion i, substantially as described.

5. The weighted lever 70, in combination with the clutch K ontrip-shaftI and loose pinion i, substantially as described.

6. The spring-switch a, in combination with the spring-latch Grand loopor keeper 71, substantially as described.

7. The upright shaft I, in combination with the loose pinion i, clutchK. cam-trip L, attached to the shaft, and latch Gr, substantially asdescribed.-

8. The latch G, connected to the switchlever, in combination'wit-h thespring 9 keeper h, and rotating cam-trip L, substantially as described.1

sAMUnL c. COBB.

